Shaftless screw conveyor with guard assembly

Abstract

The utility model discloses a kind of shaftless screw conveyors with protection assembly, it is related to screw conveyor technical field.A kind of shaftless screw conveyor with protection assembly, including screw conveyor shell, the top of screw conveyor shell is equipped with protective top cover, maintenance dismounting structure is located on screw conveyor shell, by setting maintenance dismounting structure, the quick dismounting and installation between protective top cover and screw conveyor shell are realized, and, the clamping block and the clamping groove of maintenance dismounting structure are connected, and limiting rod and limiting slot are inserted, double fixed mode ensures the stability after the installation of protective top cover, can effectively prevent protective top cover from appearing wobble or falling off in working process, when needing to maintain, overhaul or clean inside screw conveyor, just according to dismounting step operation, protective top cover can be easily removed, without using complex tool, greatly save maintenance time and manpower cost, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of screw conveyor technology, and in particular to a shaftless screw conveyor with protective components. Background Technology

[0002] In industries such as environmental protection, food, and chemicals, shaftless screw conveyors, due to their structural advantage of having no central shaft, can effectively avoid entanglement and blockage of highly viscous, fibrous, or impurity-containing materials. They are widely used in scenarios such as sludge conveying, food residue transfer, and chemical raw material transmission. Among them, the protective top cover, as the core protective component of the shaftless screw conveyor, can achieve the basic functions of "preventing material splashing, preventing external pollution, and preventing accidental contact by personnel".

[0003] When treating municipal and industrial sludge in the environmental protection industry, the sludge is highly viscous due to its high water content and is easily affected by fluctuations in operating conditions such as sudden changes in feed rate and sludge concentration. This can lead to localized accumulation in the trough. To avoid clogging and equipment overload, operators need to frequently open the protective top cover to observe the sludge conveying status in the trough and check for lumps or accumulation on the edges of the spiral blades. After daily conveying, the top cover also needs to be opened to rinse and clean the equipment. Weekly checks are also required to inspect the wear of the spiral blades and the condition of the shaft end seals. The protective top cover is opened frequently and the operation is intensive. However, most existing protective top covers are fixed with bolts. Operators need to carry wrenches, screwdrivers, and other tools to remove the bolts one by one to open the top cover. This operation is time-consuming, and installation and resetting are also inconvenient, which seriously reduces the efficiency of operation and maintenance. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a shaftless screw conveyor with protective components. This can solve the problem that when the environmental protection industry processes municipal and industrial sludge, the sludge has a high water content and strong viscosity, and is easily affected by fluctuations in operating conditions such as sudden changes in feed rate and sludge concentration, resulting in local accumulation in the trough. In order to avoid material blockage and equipment overload, operators need to frequently open the protective top cover to observe the sludge conveying status in the trough and check for lumps or accumulation on the edge of the screw blades. After the daily conveying is completed, the top cover also needs to be opened to rinse and clean the equipment. The top cover also needs to be opened weekly to check the wear of the screw blades and the condition of the shaft end seal. The protective top cover is opened frequently and the operation is intensive. However, most existing protective top covers are fixed by bolts. Operators need to carry wrenches, screwdrivers and other tools to remove the bolts one by one to open the top cover. The operation is time-consuming, and the installation and resetting are also inconvenient, which seriously reduces the efficiency of operation and maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shaftless screw conveyor with protective components, comprising:

[0006] The spiral conveyor housing has a protective top cover installed on its top.

[0007] Maintenance and disassembly structure, located on the screw conveyor housing;

[0008] The maintenance and disassembly structure includes a connecting plate, a pull rod, a plug, a sliding disc, a locking block, and a spring. The top of the screw conveyor housing has a slot, and the inside of the slot has a limit groove. The connecting plate is fixedly connected to the inner top wall of the protective top cover. The plug is fixedly connected to the bottom of the connecting plate and is inserted into the inside of the slot. A locking groove is provided on one side of the plug. The sliding disc is slidably connected to the inside of the limit groove. The locking block is fixedly connected to the side of the sliding disc near the plug. The end of the locking block away from the sliding disc slides into the inside of the slot and engages with the locking groove. The pull rod is fixedly connected to the side of the sliding disc away from the locking block. The end of the pull rod away from the sliding disc slides to the outside of the limit groove. The spring is sleeved on the outside of the pull rod, and a limit groove is provided on the top of the pull rod.

[0009] Preferably, the maintenance and disassembly structure further includes a limiting rod and a compression sleeve. The top of the protective cover is provided with a compression groove. The compression sleeve is fixedly sleeved on the outside of the limiting rod. The compression sleeve is interference-fitted with the inside of the compression groove. The bottom end of the limiting rod slides through the connecting plate and is inserted into the inside of the limiting groove.

[0010] Preferably, there are two maintenance disassembly structures, which are symmetrically arranged on the screw conveyor housing.

[0011] Preferably, one end of the spring is fixedly connected to the sliding disk, and the end of the spring away from the sliding disk is fixedly connected to the inside of the limiting groove.

[0012] Preferably, an elastic band is fixedly connected to the top of the limiting rod, and the end of the elastic band away from the limiting rod is fixedly connected to the top of the protective cover.

[0013] Preferably, a drive motor is fixedly installed on one side of the spiral conveyor housing, and the output end of the drive motor extends into the interior of the spiral conveyor housing and is fixedly connected to a shaftless spiral, which is rotatably connected to the interior of the spiral conveyor housing.

[0014] Preferably, a feed hopper is fixedly connected to the top of the screw conveyor housing, and a discharge pipe is fixedly connected to the bottom of the screw conveyor housing. Both the feed hopper and the discharge pipe are connected to the interior of the screw conveyor housing.

[0015] Preferably, the card block has a trapezoidal structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This shaftless screw conveyor with protective components features a maintenance and disassembly structure that enables quick disassembly and installation between the protective top cover and the screw conveyor housing. The structure utilizes a double-fixing method, with locking blocks and slots, and limit rods and slots, ensuring the stability of the protective top cover after installation. This effectively prevents the protective top cover from shaking or falling off during operation. When maintenance, repair, or cleaning of the screw conveyor's interior is required, the protective top cover can be easily removed by following the disassembly steps, eliminating the need for complex tools. This significantly saves maintenance time and labor costs, and improves work efficiency. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the spiral conveyor housing of this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the protective top cover of this utility model;

[0022] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A;

[0023] Figure 5 This is a schematic diagram of the pull rod structure of this utility model.

[0024] Reference numerals in the attached drawings: 1. Screw conveyor housing; 2. Protective top cover; 3. Drive motor; 4. Shaftless screw; 5. Limiting groove; 6. Slot; 7. Extrusion groove; 8. Connecting plate; 9. Pull rod; 10. Limiting groove; 11. Insert block; 12. Limiting rod; 13. Extrusion sleeve; 14. Elastic band; 15. Locking block; 16. Sliding disc; 17. Spring; 18. Locking groove. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Screw conveyor housing 1: As the main supporting structure of the entire screw conveyor, it provides rotation space for the shaftless screw 4 and carries the material conveying path; a protective top cover 2 can be installed on the top and a slot 6 is provided; a drive motor 3 is fixedly installed on one side; a feed hopper is fixedly connected to the top and a discharge pipe is fixedly connected to the bottom, and it is connected to the feed hopper, discharge pipe and the installation space of the shaftless screw 4; a limit groove 5 is provided inside corresponding to the slot 6 to accommodate the sliding plate 16, spring 17 and other components for maintenance and disassembly.

[0030] Protective top cover 2: used to cover the top of the screw conveyor housing 1, and to protect the internal components and materials of the screw conveyor; the inner top wall is fixedly connected to the connecting plate 8, and the top is provided with an extrusion groove 7 for the insertion of the limiting rod 12. The top is also fixedly connected to one end of the elastic band 14, and it is detachably connected to the screw conveyor housing 1 through the maintenance and disassembly structure.

[0031] Drive motor 3: As a power source, it is fixedly installed on one side of the screw conveyor housing 1. After starting, its output end can drive the shaftless screw 4 to rotate inside the screw conveyor housing 1, providing power for material conveying.

[0032] Shaftless screw 4: Rotatably connected inside the screw conveyor housing 1, with one end fixedly connected to the output end of the drive motor 3. It rotates under the drive of the drive motor 3, which can push the material entering the screw conveyor housing 1 from the feed hopper to move along the inner wall of the housing, and finally make the material discharged from the discharge pipe.

[0033] Limiting groove 5: It is formed inside the spiral conveyor housing 1 and communicates with the slot 6, providing a sliding track for the sliding disk 16 and limiting the movement direction of the sliding disk 16; at the same time, it is internally fixedly connected to one end of the spring 17, providing space for the spring 17 to be installed, compressed, and reset.

[0034] Slot 6: Located on the top of the spiral conveyor housing 1, it matches the insert 11 at the bottom of the connecting plate 8 on the protective top cover 2, allowing the insert 11 to be inserted. It is the structure for the initial docking of the protective top cover 2 and the spiral conveyor housing 1, and its interior is connected to the limiting slide groove 5, allowing the locking block 15 to extend into the interior and engage with the locking groove 18 of the insert 11.

[0035] Extrusion groove 7: It is formed on the top of the protective top cover 2 and is interference-fitted with the extrusion sleeve 13 that is fixedly connected to the outside of the limiting rod 12. Through the tight contact between the extrusion sleeve 13 and the extrusion groove 7, the position of the limiting rod 12 is fixed, thereby enhancing the fixing effect of the protective top cover 2.

[0036] Connecting plate 8: It is fixedly connected to the inner top wall of the protective top cover 2, and the bottom is fixedly connected to the plug 11, which serves to connect the protective top cover 2 and the plug 11; at the same time, it allows the bottom end of the limiting rod 12 to slide through, providing a through channel for the limiting rod 12, so that the limiting rod 12 can be inserted into the limiting groove 10 at the top of the pulling rod 9.

[0037] Pull rod 9: One end is fixedly connected to the side of the sliding plate 16 away from the locking block 15, and the other end slides to the outside of the limiting groove 5. A limiting groove 10 is opened at the top. When pulled, it can drive the sliding plate 16 to slide in the limiting groove 5, so that the locking block 15 slides out of the locking groove 18, releases the locking of the insert block 11, and facilitates the disassembly of the protective top cover 2. The limiting groove 10 at the top is inserted into the bottom end of the limiting rod 12 to prevent the pull rod 9 from shaking.

[0038] Limiting groove 10: It is formed on the top of the pull rod 9 and is inserted into the bottom end of the limiting rod 12. Through the cooperation of the two, the movement of the pull rod 9 is restricted, preventing the pull rod 9 from shaking in the non-disassembly state, thereby ensuring the stability of the engagement between the locking block 15 and the locking groove 18.

[0039] Insert block 11: It is fixedly connected to the bottom of the connecting plate 8 and inserted into the slot 6 on the top of the screw conveyor housing 1. It is the key structure for docking the protective top cover 2 with the screw conveyor housing 1. A slot 18 is provided on one side for the locking block 15 to engage, so as to achieve the initial fixation of the protective top cover 2.

[0040] Limiting rod 12: externally fixed to the extrusion sleeve 13, with one end of the elastic band 14 fixedly connected to the top; the bottom end can slide through the connecting plate 8 and be inserted into the limiting groove 10 at the top of the pull rod 9, which further fixes the protective top cover 2 and prevents the pull rod 9 from shaking; when pulled upward, the extrusion sleeve 13 can be separated from the extrusion groove 7 and the bottom end can be pulled out from the limiting groove 10, preparing for the disassembly of the protective top cover 2;

[0041] Extrusion sleeve 13: It is fixedly sleeved on the outside of the limiting rod 12 and has an interference fit with the inside of the extrusion groove 7 on the top of the protective cover 2. Through its tight contact with the extrusion groove 7, it increases the friction between the limiting rod 12 and the protective cover 2, helps to fix the position of the limiting rod 12 and prevents the limiting rod 12 from loosening when not in operation.

[0042] Elastic band 14: One end is fixedly connected to the top of the limiting rod 12, and the other end is fixedly connected to the top of the protective top cover 2. It is elastic and can be connected to the protective top cover 2 when the limiting rod 12 is pulled out of the squeezing groove 7 to prevent the limiting rod 12 from being lost.

[0043] The locking block 15 has a trapezoidal structure and is fixedly connected to the side of the sliding plate 16 near the insert block 11. When the insert block 11 is inserted into the slot 6, the insert block 11 will squeeze the locking block 15, causing the sliding plate 16 to slide and the spring 17 to compress. After the insert block 11 is fully inserted into the slot 6, it can slide into the slot 6 under the elastic force of the spring 17 and engage with the locking groove 18 on one side of the insert block 11, thus achieving the initial fixation of the protective top cover 2. When disassembling, it can slide out from the locking groove 18 as the sliding plate 16 slides, releasing the engagement.

[0044] Sliding disc 16: It is slidably connected inside the limiting slide groove 5, with a locking block 15 fixedly connected on one side and a pulling rod 9 fixedly connected on the other side, and a spring 17 sleeved on the outside; it can slide along the limiting slide groove 5 under the drive of the pulling rod 9 or the squeezing of the locking block 15, thereby driving the locking block 15 to move, while squeezing or stretching the spring 17.

[0045] Spring 17: Sleeves around the outside of the pull rod 9, one end is fixedly connected to the sliding plate 16, and the other end is fixedly connected to the inside of the limiting slide groove 5; when the sliding plate 16 slides and compresses the spring 17, the spring 17 generates elastic potential energy; when the external force disappears, such as when the insert block 11 is fully inserted into the slot 6, the spring 17 releases its elastic potential energy, pushes the sliding plate 16 to reset, and makes the locking block 15 engage with the locking groove 18; when disassembling, pulling the sliding plate 16 will compress the spring 17 again;

[0046] Slot 18: It is located on one side of the insert 11 and engages with the insert 15 extending into the slot 6. The cooperation between the two enables the insert 11 to be relatively fixed to the spiral conveyor housing 1, thereby completing the initial fixation of the protective top cover 2. When the insert 15 slides out of the slot 18, the insert 11 can be pulled out of the slot 6, thereby disassembling the protective top cover 2.

[0047] Example 1:

[0048] like Figure 1-5 As shown, a horizontal shaftless screw conveyor is used in a municipal sewage treatment plant to transport wet sludge with a moisture content of 85%. The cover is frequently opened to check whether the sludge has accumulated and clumped inside the screw conveyor casing 1 to prevent material blockage.

[0049] The operator does not need any tools. First, pinch the top of the limiting rod 12 and pull it upward. Because the extrusion sleeve 13 and the extrusion groove 7 are interference fit, a little force is required, but it can be operated by one person. After pulling it out, the bottom of the limiting rod 12 is disengaged from the limiting groove 10 of the pulling rod 9. Then, pull the pulling rod 9 outward, which will drive the sliding plate 16 to slide along the limiting groove 5. The spring 17 is compressed, and the trapezoidal locking block 15 is disengaged from the locking groove 18 of the insert block 11, releasing the limitation on the insert block 11. Finally, lift the protective top cover 2 upward to observe the state of the sludge in the machine tank. After the inspection is completed, reverse the operation.

[0050] The limiting rod 12 can further secure the protective top cover 2 during installation, while also limiting the pull rod 9 to prevent it from shaking.

[0051] Example 2:

[0052] like Figure 5 As shown, the limiting rod 12 is fixedly connected to the top of the protective cover 2 via the elastic band 14. When the limiting rod 12 is pulled upward, the elastic band 14 naturally stretches, and the limiting rod 12 is always hung on the protective cover 2. There is no need to worry about losing it or placing it on the mud-covered ground and causing pollution.

[0053] Furthermore, when using this device, when the drive motor 3 is started, the drive motor 3 drives the shaftless screw 4 to rotate inside the screw conveyor housing 1. The material enters the screw conveyor housing 1 from the feed hopper fixedly connected to the top of the screw conveyor housing 1. As the shaftless screw 4 rotates, the material is pushed and moves along the screw conveyor housing 1, and finally is discharged from the discharge pipe fixedly connected to the bottom of the screw conveyor housing 1, thus realizing the material conveying.

[0054] Place the protective top cover 2 on top of the screw conveyor housing 1, aligning the insert block 11 with the slot 6 on the top of the screw conveyor housing 1 and inserting it. During insertion, because the locking block 15 has a trapezoidal structure, the insert block 11 will squeeze the locking block 15, causing the sliding plate 16 to slide within the limiting groove 5, and the spring 17 to be compressed. When the insert block 11 is fully inserted into the slot 6, the locking block 15, under the elastic force of the spring 17, slides into the slot 6 and engages with the locking groove 18 on one side of the insert block 11, achieving initial engagement. Then, the limiting rod 12 is inserted into the extrusion groove 7 opened at the top of the protective top cover 2. The extrusion sleeve 13 is fixedly sleeved on the outside of the limiting rod 12 and is interference-fitted with the inside of the extrusion groove 7. The bottom end of the limiting rod 12 slides through the connecting plate 8 and is inserted into the limiting groove 10 opened at the top of the pull rod 9 to further fix the protective top cover 2 and prevent the pull rod 9 from shaking. One end of the elastic band 14 fixedly connected to the top of the limiting rod 12 is fixedly connected to the top of the protective top cover 2 to prevent the limiting rod 12 from being lost.

[0055] During disassembly, pull the limiting rod 12 upward to separate the extrusion sleeve 13 from the extrusion groove 7. The bottom end of the limiting rod 12 is pulled out of the limiting groove 10. Then, pull the pulling rod 9 away from the slot 6. The pulling rod 9 drives the sliding plate 16 to slide in the limiting slide groove 5. The spring 17 is compressed, and at the same time, the locking block 15 slides out of the locking groove 18, releasing the locking of the insert block 11. At this time, the protective top cover 2 can be lifted upward, and the insert block 11 is pulled out of the slot 6, completing the disassembly of the protective top cover 2, which facilitates the maintenance and repair of the inside of the screw conveyor.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A shaftless screw conveyor with protective components, characterized in that, include: The spiral conveyor housing (1) has a protective top cover (2) installed on its top. Maintenance and disassembly structure, which is located on the screw conveyor housing (1); The maintenance and disassembly structure includes a connecting plate (8), a pull rod (9), a plug (11), a sliding plate (16), a locking block (15), and a spring (17). The top of the screw conveyor housing (1) is provided with a slot (6), and a limit groove (5) is provided inside the slot (6). The connecting plate (8) is fixedly connected to the inner top wall of the protective top cover (2), and the plug (11) is fixedly connected to the bottom of the connecting plate (8). The plug (11) is inserted into the inside of the slot (6). Among them, a slot (18) is provided on one side of the insert (11), the sliding disk (16) is slidably connected to the inside of the limiting slide groove (5), the card block (15) is fixedly connected to the side of the sliding disk (16) near the insert (11), and the end of the card block (15) away from the sliding disk (16) slides into the inside of the slot (6) and engages with the slot (18). The pull rod (9) is fixedly connected to the side of the sliding plate (16) away from the locking block (15). The end of the pull rod (9) away from the sliding plate (16) extends slidably to the outside of the limiting groove (5). The spring (17) is sleeved on the outside of the pull rod (9). A limiting groove (10) is opened at the top of the pull rod (9).

2. The shaftless screw conveyor with protective components according to claim 1, characterized in that: The maintenance and disassembly structure also includes a limiting rod (12) and a compression sleeve (13). The top of the protective cover (2) is provided with a compression groove (7). The compression sleeve (13) is fixedly sleeved on the outside of the limiting rod (12). The compression sleeve (13) is interference-fitted with the inside of the compression groove (7). The bottom end of the limiting rod (12) slides through the connecting plate (8) and is inserted into the inside of the limiting groove (10).

3. A shaftless screw conveyor with protective components according to claim 1, characterized in that: The number of maintenance and disassembly structures is two, and the two maintenance and disassembly structures are symmetrically arranged on the spiral conveyor housing (1).

4. A shaftless screw conveyor with protective components according to claim 1, characterized in that: One end of the spring (17) is fixedly connected to the sliding disk (16), and the end of the spring (17) away from the sliding disk (16) is fixedly connected to the inside of the limiting groove (5).

5. A shaftless screw conveyor with protective components according to claim 2, characterized in that: An elastic band (14) is fixedly connected to the top of the limiting rod (12), and one end of the elastic band (14) away from the limiting rod (12) is fixedly connected to the top of the protective top cover (2).

6. A shaftless screw conveyor with protective components according to claim 1, characterized in that: A drive motor (3) is fixedly installed on one side of the spiral conveyor housing (1). The output end of the drive motor (3) extends into the interior of the spiral conveyor housing (1) and is fixedly connected to a shaftless spiral (4). The shaftless spiral (4) is rotatably connected to the interior of the spiral conveyor housing (1).

7. A shaftless screw conveyor with protective components according to claim 1, characterized in that: The top of the screw conveyor housing (1) is fixedly connected to a feed hopper, and the bottom of the screw conveyor housing (1) is fixedly connected to a discharge pipe. Both the feed hopper and the discharge pipe are connected to the interior of the screw conveyor housing (1).

8. A shaftless screw conveyor with protective components according to claim 1, characterized in that: The card block (15) has a trapezoidal structure.

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